test_extract stderr

etc/python/grass/lib/gis.py:797: DeprecationWarning: classic int division
  ('__val', c_ulong * (1024 / (8 * sizeof(c_ulong)))),
/usr/lib/python2.7/xml/etree/ElementTree.py:1627: DeprecationWarning: This method of XMLParser is deprecated.  Define doctype() method on the TreeBuilder target.
  DeprecationWarning,
....
----------------------------------------------------------------------
Ran 4 tests in 9.319s
OK